Question

196: {64- 196:{64-[18+2x(25-21)²]}

Answer 1

thoạt tiên bn đã vt sai đề :(chỗ in đậm)

196:{64-196:{64-[18+2(25-21)²]}}

=196:{64-196:{64-[18+2.4²]}}

=196:{64-196:{64-[18+32]}}

=196:{64-196:{64-50}}

=196:{64-196:14}}

=196:{64-14}

=196:50

=3.92

Answer 2

sai đề